SAp, with the support of SIS and SEDI, is involved in the realization of three major space instruments (the PACS and SPIRE HERSCHEL instruments and MIRI, the mid-infrared instrument to equip the JWST telescope, the successor of the Hubble Space Telescope). SAp also participate in the GLAST and PLANCK projects but only on software for data analysis. SAp is also actively preparing the future by leading feasibility studies of five projects, four space projects and one ground-based project.